import java.util.Scanner;
public class TextDeMo {


    public static boolean LeapYear(int year){
        if((year%4==0&&year%100!=0)||(year%400==0)) {
            return true;
        }else{
            return false;
        }

    }
    public static int num(int num1){
        int i = 0;
        int sum = 0;
        int tem = 1;
        for(i = 1;i<=num1;i++){
            tem*=i;
            sum+=tem;
        }
        return sum;
    }
    public static void swap(int[] array){
        int tem = array[0];
        array[0] = array[1];
        array[1] = tem;
    }
    public static int Add(int num1,int num2){
        return num1+num2;
    }
    public static double Add(double num1,double num2){
        return num1+num2;
    }
    public static void main1(String[] args) {
        int a = 10;
        int b = 50;
        System.out.println(Add(a, b));
        double num3 = 30;
        double num4 = 50;
        System.out.println(Add(num3, num4));
    }
    public static void main2(String[] args) {
        add(1, 2); // 调用add(int, int)
        add(1.5, 2.5); // 调用add(double, double)
        add(1.5, 2.5, 3.5); // 调用add(double, double, double)
    }
    public static int add(int x, int y) {
        return x + y;
    }
    public static double add(double x, double y) {
        return x + y;
    }
    public static double add(double x, double y, double z) {
        return x + y + z;
    }
    public static int factor(int n){
        if(n==1){
            return 1;
        }else{
            return n*factor(n-1);
        }
    }
    public static void print3(int num){
        if(num<=9) {
            System.out.println(num);
           return;
        } else
            print(num/10);
        System.out.println(num%10);
        }
    public static void main3(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int num = scanner.nextInt();
        print(num);
    }
    public static int fun(int num1){

    }
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int x = scanner.nextInt();
        System.out.println(fun(x));
    }
    }



   // public static int getSum(int N){ // N是形参
     //   return (1+N)*N / 2;
    //}
    //getSum(10); // 10是实参,在方法调用时，形参N用来保存10
    //getSum(100); // 100是实参，在方法调用时，形参N用来保存100
   /*public static int add(int a, int b){
       return a + b;
   } add(2, 3); // 2和3是实参，在调用时传给形参a和b
    */

